globalchange  > 气候减缓与适应
DOI: 10.1016/j.jcou.2018.08.003
Scopus记录号: 2-s2.0-85051659592
论文题名:
Design of Ni-ZrO2@SiO2 catalyst with ultra-high sintering and coking resistance for dry reforming of methane to prepare syngas
作者: Liu W.; Li L.; Zhang X.; Wang Z.; Wang X.; Peng H.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27
起始页码: 297
结束页码: 307
语种: 英语
英文关键词: Confinement ; Core-shell catalysts ; Dry reforming of methane ; Ultra-high sintering and coking resistance ; Zirconium dioxide
Scopus关键词: Carbon dioxide ; Catalysts ; Greenhouse gases ; Hydrogen storage ; Methane ; Plasma confinement ; Reforming reactions ; Shells (structures) ; Silica ; Sintering ; Solar power generation ; Synthesis gas ; Zirconia ; Coking resistance ; Core shell catalysts ; Core shell structure ; Dry reforming-of-methane ; Nickel nanoparticles ; Reaction conditions ; Weight hourly space velocity ; Zirconium dioxide ; Nickel compounds
英文摘要: Dry reforming of methane (DRM) is an important reaction to prepare syngas (CO and H2) and green hydrogen energy (H2) and to use two abundant greenhouse gases (CO2 and CH4); the process is used in solar thermal-chemical storage and other kinds of high-temperature energy storage. However, the sintering and coking of the Ni-based catalysts represent two serious obstacles for the use of DRM in industrial applications. Herein, a novel core-shell catalyst with zirconia-modified nickel nanoparticles (NPs, Ni-ZrO2) as the cores and microporous silica as the shell (denoted as Ni-ZrO2@SiO2) was successfully designed and prepared via a one-pot facile strategy and used for the DRM reaction. The Ni-ZrO2@SiO2 catalyst showed the best time stability (240 h) under harsh reaction conditions (pure CH4 and CO2 as a feed gas, 800 °C, weight hourly space velocity (WHSV) = 18,000 ml gcat. -1 h-1) among the recently reported core-shell structured DRM catalysts and most importantly, no coking occurred. The catalyst also efficiently inhibited the sintering of the Ni NPs and thus greatly improved the resistance to coking due to the modification of the ZrO2 providing abundance of activated oxygen (Ni and ZrO2 was highly dispersed with each other, therefore, much amount of Ni-ZrO2 interface and perimeter was formed) and the special core-shell structure. Thanks to its ultra-high anti-sintering ability and resistance to carbon deposition, the Ni-ZrO2@SiO2 catalyst might have great potential for industrial applications. © 2018 Elsevier Ltd. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111811
Appears in Collections:气候减缓与适应

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作者单位: Institute of Applied Chemistry, College of Chemistry, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi, 330031, China; State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China

Recommended Citation:
Liu W.,Li L.,Zhang X.,et al. Design of Ni-ZrO2@SiO2 catalyst with ultra-high sintering and coking resistance for dry reforming of methane to prepare syngas[J]. Journal of CO2 Utilization,2018-01-01,27
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